Every time I read something like this, I think about how many of the disagreements on policy I read and hear about might come from none of the relevant parties knowing what they’re talking about. Not in the “they’re reasoning wrong” sense but in the “they don’t even know what the words mean or what they want the words to mean” sense.
Also, honest question: why do so many people think foreign-owned US debt is a bad thing? At first glance is seems like other countries and their citizens give us something we value in exchange for a promise to given them things we can create with a keystroke, if we so choose.